﻿// Copyright 2004-2011 Castle Project - http://www.castleproject.org/
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#region 导入名称空间

using System;
using System.Reflection;
using System.Reflection.Emit;
using LightWork.DynamicProxy.Generators.Emitters.SimpleAST;

#endregion

namespace LightWork.DynamicProxy.Generators.Emitters.CodeBuilders
{
    public class ConstructorCodeBuilder : AbstractCodeBuilder
    {
        private readonly Type baseType;

        public ConstructorCodeBuilder(Type baseType, ILGenerator generator) : base(generator)
        {
            this.baseType = baseType;
        }

        public void InvokeBaseConstructor()
        {
            var type = baseType;
            if (type.ContainsGenericParameters)
                type = type.GetGenericTypeDefinition();

            var flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
            var baseDefaultCtor = type.GetConstructor(flags, null, new Type[0], null);

            InvokeBaseConstructor(baseDefaultCtor);
        }

        public void InvokeBaseConstructor(ConstructorInfo constructor)
        {
            AddStatement(new ConstructorInvocationStatement(constructor));
        }

        public void InvokeBaseConstructor(ConstructorInfo constructor, params ArgumentReference[] arguments)
        {
            AddStatement(
                new ConstructorInvocationStatement(constructor,
                    ArgumentsUtil.ConvertArgumentReferenceToExpression(arguments)));
        }
    }
}